COMPARISON OF 3 MEASURES OF RESISTANCE OF SOIL SURFACE SEALS TO RAINDROP SPLASH

被引：25

作者：

BRADFORD, JM

TRUMAN, CC

HUANG, C

机构：

来源：

SOIL TECHNOLOGY | 1992年 / 5卷 / 01期

关键词：

D O I：

10.1016/0933-3630(92)90006-M

中图分类号：

P [天文学、地球科学];

学科分类号：

07 ;

摘要：

The relationship between rainsplash and three measures of soil strength was investigated for surface soil seals using a laboratory rainfall simulator and erosion pans. A significantly high correlation was found between pocket penetrometer and torvane strengths (R2 = 0.49), and a lower correlation between both pocket penetrometer (R2 = 0.24) and torvane (R2 = 0.24) strengths and the fall-cone strength was found. Rainsplash was highly correlated (R2 = 0.49) with rainfall kinetic energy (KE) divided by the fall-cone shear strength (FC) but was not related to penetrometer and torvane strengths. Addition of a silt content term to the KE/FC linear equation slightly decreased R2. Improvements in the prediction of rainsplash can be achieved by including terms defining the macro- and microtopography, such as slope steepness, surface roughness, and depressional storage.

引用

页码：47 / 56

页数：10

共 23 条

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